document.write("\n");
_version=10;
document.write("\n");
_version=11;
if (navigator.userAgent.indexOf('Mozilla/3') != -1){
_version=10;}
document.write("\n");
var OAS='http://ads.space.com/RealMedia/ads/';
var sitepage = "www.newscientist.com/square300x250";
var RN = new String (Math.random());
var RNS = RN.substring (2, 11);
function DisplayAds (position, width, height)
{
var OASpage= sitepage + '/1' + RNS + '@' + position;
if (_version < 11) {
document.write ('');
} else {
document.write ('